CN105157157B - A kind of VMC and its ventilation control method and device - Google Patents

A kind of VMC and its ventilation control method and device Download PDF

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CN105157157B
CN105157157B CN201510374258.2A CN201510374258A CN105157157B CN 105157157 B CN105157157 B CN 105157157B CN 201510374258 A CN201510374258 A CN 201510374258A CN 105157157 B CN105157157 B CN 105157157B
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ventilation
vmc
air quality
air
outdoor air
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CN105157157A (en
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李秉樵
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Abstract

The invention belongs to air conditioner controlling technology field, there is provided a kind of VMC and its ventilation control method and device.The present invention judges whether Outdoor Air Quality is good by detecting dust concentration and peculiar smell concentration acquisition Outdoor Air Quality index in outdoor air；Meanwhile elastic parameter is obtained according to detected indoor gas concentration lwevel and default gas concentration lwevel, and judge whether room air meets ventilation execution condition according to the elastic parameter；When Outdoor Air Quality is non-good, and room air is not met when taking a breath execution condition, the ventilatory of VMC is carried out switching control according to accessed Outdoor Air Quality index and elastic parameter or controls the air exchanging rate of VMC, so as to regulate and control to the ventilatory of VMC, so that ventilatory is unlikely to whole unlatching when VMC is run, contribute to service life or the replacement cycle of extension dust removal component and the part that eliminates the unusual smell, and and then reduction VMC cost of upkeep.

Description

A kind of VMC and its ventilation control method and device
Technical field
The invention belongs to air conditioner controlling technology field, more particularly to a kind of VMC and its ventilation control method and dress Put.
Background technology
At present, for VMC, it operationally carries out ventilation processing needs to room air will come from outdoor Air carry out dedusting and eliminate the unusual smell handle after be re-fed into interior.For dust removal process, it is typically to use filter screen or electronics collection Dirt device is filtered or collected to the fine particle in outdoor air and pellet；For the processing that eliminates the unusual smell, its is usual It is that the gas with foreign flavor such as the sulfur dioxide in outdoor air, nitrogen dioxide, ozone and carbon monoxide are adsorbed using activated carbon. However, because the good degree of room air and outdoor air can change, it is good for room air and outdoor empty The second-rate situation of gas, do not carry out ventilation processing to room air within a period of time also will not cause shadow to user Ring, but existing VMC in the course of the work can't be according to the corresponding adjustment ventilation processing of air quality quality of indoor and outdoor Execution, then be used for part (including above-mentioned filter screen, electronic dust catcher, the activity of dedusting and the processing that eliminates the unusual smell in VMC Charcoal) work of being participated in the overall process when VMC is run, this will shorten the service life of these parts or replacement cycle, enter And cause the increase of VMC cost of upkeep.
The content of the invention
It is an object of the invention to provide a kind of VMC ventilation control method, it is intended to solves existing VMC and exists It is whole during operation to open ventilatory and shorten service life or the replacement cycle of the part for dedusting and the processing that eliminates the unusual smell, And and then increase VMC cost of upkeep the problem of.
The present invention is achieved in that a kind of VMC ventilation control method, and it comprises the following steps：
A. the dust concentration and peculiar smell concentration in outdoor air are detected, is obtained according to the dust concentration and the peculiar smell concentration Outdoor Air Quality index is taken, and judges whether Outdoor Air Quality is good according to the Outdoor Air Quality index；Meanwhile examine The gas concentration lwevel surveyed in room air, elasticity ginseng is obtained according to the gas concentration lwevel and default gas concentration lwevel Number, and judge whether room air meets ventilation execution condition according to the elastic parameter；
B. when Outdoor Air Quality is good and/or room air meets ventilation execution condition, control VMC performs Ventilation treatment progress, and return and perform step A；
C. when Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to accessed Outdoor Air Quality index and elastic parameter carry out switching control or adjust VMC to the ventilatory of VMC Air exchanging rate, and return and perform step A.
Present invention also offers a kind of VMC air-changing control device, and it includes outdoor air detection module, air matter Volume index acquisition module, outdoor air judge module, room air detection module, elastic parameter acquisition module, room air are sentenced Disconnected module and ventilation control module, and perform following process：
Process 1：Dust concentration and peculiar smell concentration in the outdoor air detection module detection outdoor air, the air Performance figure acquisition module obtains Outdoor Air Quality index according to the dust concentration and the peculiar smell concentration, and by the room Outer air judge module judges whether Outdoor Air Quality is good according to the Outdoor Air Quality index；Meanwhile the interior Gas concentration lwevel in air detection module detection room air, the elastic parameter acquisition module is according to the carbon dioxide Concentration obtains elastic parameter with default gas concentration lwevel, and is sentenced by the room air judge module according to the elastic parameter Whether disconnected room air meets ventilation execution condition；
Process 2：When Outdoor Air Quality is good and/or room air meets ventilation execution condition, the ventilation control Module control VMC performs ventilation treatment progress, and returns and perform the process 1；
Process 3：When Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to acquired The Outdoor Air Quality index and elastic parameter arrived, the ventilation control module carry out switch control to the ventilatory of VMC The air exchanging rate of system or adjustment VMC, and return and perform the process 1.
Present invention also offers a kind of VMC for including above-mentioned VMC air-changing control device.
In the present invention, obtain Outdoor Air Quality by detecting dust concentration in outdoor air and peculiar smell concentration and refer to Number, and judge whether Outdoor Air Quality is good；Meanwhile according to detected indoor gas concentration lwevel and default dioxy Change concentration of carbon and obtain elastic parameter, and judge whether room air meets ventilation execution condition according to the elastic parameter；Work as outdoor Air quality is non-good, and room air is not met when taking a breath execution condition, according to accessed Outdoor Air Quality index The ventilatory of VMC is carried out switching control with elastic parameter or controls the air exchanging rate of VMC, so as to Air is good indoors and the ventilatory of VMC is regulated and controled in the case that Outdoor Air Quality is poor, so that ventilation Function is unlikely to whole unlatching when VMC is run, contribute to extend dust removal component and eliminate the unusual smell part service life or Replacement cycle, and and then reduction VMC cost of upkeep.
Brief description of the drawings
Fig. 1 is the implementation process figure of VMC ventilation control method provided in an embodiment of the present invention；
Fig. 2 is the specific implementation flow chart involved by step S3 in Fig. 1；
Fig. 3 is the ventilation operation curve schematic diagram of the VMC involved by the embodiment of the present invention；
Fig. 4 is another ventilation operation curve schematic diagram of the VMC involved by the embodiment of the present invention；
Fig. 5 is the structural representation of VMC air-changing control device provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Fig. 1 shows the implementation process of VMC ventilation control method provided in an embodiment of the present invention, for the ease of saying It is bright, the part related to the embodiment of the present invention is illustrate only, details are as follows：
In step sl, the dust concentration and peculiar smell concentration in outdoor air are detected, it is dense according to the dust concentration and peculiar smell Degree obtains Outdoor Air Quality index, and judges whether Outdoor Air Quality is good according to the Outdoor Air Quality index；Meanwhile The gas concentration lwevel in room air is detected, elasticity ginseng is obtained according to the gas concentration lwevel and default gas concentration lwevel Number, and judge whether room air meets ventilation execution condition according to the elastic parameter.
Specifically, the step of obtaining Outdoor Air Quality index according to the dust concentration and peculiar smell concentration in step S1 is specific For：According to conventional air quality index monitoring method, the outdoor air matter according to corresponding to obtaining dust concentration and peculiar smell concentration Volume index.Conventional air quality index monitoring method is：First calculate dust concentration and peculiar smell concentration each corresponding to air Quality separate index number, the air quality separate index number of maximum is then chosen as air quality index.
For judging the whether good step of Outdoor Air Quality according to the Outdoor Air Quality index in step S1, it has Body is：
Judge whether Outdoor Air Quality index is less than preset air performance figure, be, then judge that Outdoor Air Quality is good It is good, it is no, then judge that Outdoor Air Quality is non-good.
Wherein, preset air performance figure is set in advance to be used to evaluate the whether good reference of Outdoor Air Quality and refer to Numerical value.Such as：Preset air performance figure is 75, if Outdoor Air Quality index is less than 75, judges Outdoor Air Quality Well, whereas if Outdoor Air Quality index is not less than 75, then judge that Outdoor Air Quality is non-good.
The step of for obtaining elastic parameter according to the gas concentration lwevel and default gas concentration lwevel in step S1, its Specially：
Elastic parameter is obtained according to following formula：
Wherein, P is elastic parameter, NSETTo preset gas concentration lwevel, NROOMFor the dense carbon dioxide in room air Degree, 380ppm is the gas concentration lwevel of the outdoor air chosen in advance in normal conditions, and ppm is concentration unit；Default two Aoxidize concentration of carbon NSETIt is user's gas concentration lwevel set in advance.
For the step of whether room air meets ventilation execution condition judged according to the elastic parameter in step S1, it has Body is：
Judge whether elastic parameter is less than default elastic parameter, be, then judge that room air does not meet ventilation execution condition, It is no, then judge that room air meets ventilation execution condition.
Wherein, default elastic parameter is the bullet set in advance for being used to judge whether room air meets ventilation execution condition Property parameter reference values.Such as：Default elastic parameter is 15%, if elastic parameter is less than 15%, shows that room air is good And can be temporarily without ventilation, it is determined that room air does not meet ventilation execution condition, whereas if elastic parameter is not less than 15%, then show that the carbon dioxide content in room air is higher and more muddiness is, it is necessary to carry out ventilation processing, it is determined that room Interior air meets ventilation execution condition.
In step s 2, when Outdoor Air Quality is good and/or room air meets ventilation execution condition, fresh air is controlled System performs ventilation treatment progress, and returns and perform step S1.
In step S2 when Outdoor Air Quality is good and/or room air meets ventilation execution condition, fresh air system is controlled System performs the step of taking a breath treatment progress：
When Outdoor Air Quality is good, control VMC opens ventilatory, and is held according to default wind-speed gear Row ventilation treatment progress；
When room air meets ventilation execution condition, control VMC opens ventilatory, and according to elastic parameter Choose corresponding wind-speed gear and perform ventilation treatment progress；
When Outdoor Air Quality is good and room air meets ventilation execution condition, control VMC opens ventilation work( Can, and perform ventilation treatment progress according to default wind-speed gear or corresponding wind-speed gear is chosen according to elastic parameter and perform Ventilation treatment progress.
Wherein, wind-speed gear can be divided into high wind gear, apoplexy gear and low wind gear, each wind-speed gear and correspond to a kind of wind Speed, wind speed corresponding to high wind gear are more than wind speed corresponding to apoplexy gear, and wind speed corresponding to apoplexy gear is more than low wind gear pair The wind speed answered.Above-mentioned default wind-speed gear refers to the wind-speed gear set by user.
The step of corresponding wind-speed gear performs ventilation treatment progress is chosen according to elastic parameter for above-mentioned, for example, working as When elastic parameter is less than 15%, VMC chooses apoplexy gear and performs ventilation treatment progress, and when elastic parameter is less than 8% When, show that the gas concentration lwevel of room air is higher, so VMC choose high wind gear perform ventilation treatment progress with Just room air is improved as early as possible.
In step s3, when Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to institute The Outdoor Air Quality index and elastic parameter got carries out switching control or adjustment newly to the ventilatory of VMC The air exchanging rate of wind system, and return and perform step S1.
In an embodiment of the present invention, as shown in Fig. 2 in step S3 according to accessed Outdoor Air Quality index and Elastic parameter controls the switch of the ventilatory of VMC or specifically included the step of adjusting the air exchanging rate of VMC Following steps：
S31. in calculating cycle, the dust concentration in outdoor air and peculiar smell concentration are entered every a preset time period Row detection, and Outdoor Air Quality index is obtained, and the gas concentration lwevel in room air is detected simultaneously；
S32. at the end of calculating cycle, chosen most from acquired Outdoor Air Quality index in the calculating cycle Big air quality index and minimum air quality index, and according to the gas concentration lwevel of now detected room air with Default gas concentration lwevel obtains current elastic parameter；
S33. ventilation switch is obtained according to maximum air quality index, minimum air quality index and current elastic parameter Critical exponent；
S34. judge whether current air quality index is less than ventilation switch critical exponent, be then to perform step S35, It is no, then perform step S36；
S35. VMC is controlled to open ventilatory；
S36. VMC is controlled to close ventilatory.
Wherein, calculating cycle is specifically as follows 10 minutes, and preset time period is specifically as follows 10 seconds；For step S31, then It is in 10 minutes, the dust concentration in outdoor air and peculiar smell concentration is detected every 10 seconds, and obtain outdoor air Performance figure, and the gas concentration lwevel in room air is detected simultaneously.Then it is the calculating week at 10 minutes for step S32 At the end of phase, maximum air quality index AQI is chosen from acquired Outdoor Air Quality index in 10 minutesMAXMost Small air quality index AQIMIN, and the gas concentration lwevel according to now detected room air and default carbon dioxide Concentration obtains current elastic parameter P.
Gas concentration lwevel in step S32 according to now detected room air obtains with default gas concentration lwevel The step of taking current elastic parameter be specially：
Current elastic parameter is obtained according to following formula：
Wherein, P is elastic parameter, NSETTo preset gas concentration lwevel, NROOMFor the dense carbon dioxide in room air Degree, 380ppm is the gas concentration lwevel of the outdoor air chosen in advance in normal conditions, and ppm is concentration unit；Default two Aoxidize concentration of carbon NSETIt is user's gas concentration lwevel set in advance.
Step S33 is specially：
Ventilation switch critical exponent is obtained according to following formula：
AQION/OFF=AQIMIN+(AQIMAX-AQIMIN)×P
Wherein, AQION/OFFCritical exponent, AQI are switched for ventilationMINFor minimum air quality index, AQIMAXFor maximum sky Makings volume index, P are current elasticity indexes.
Involved " current air quality index " refers at the end of calculating cycle in above-mentioned steps S34, passes through step Air quality index accessed by rapid S31.
In from above-mentioned steps S34 to step S36 implementation procedure, the ventilation operation curve of VMC as shown in figure 3, It is less than ventilation switch critical exponent AQI in current air quality index AQION/OFFWhen, VMC is controlled by step S35 Ventilatory is opened, now VMC can be according to a certain wind-speed gear (such as high wind gear, apoplexy gear or low wind shelves Position) ventilation treatment progress is performed, air exchanging rate V is to should wind-speed gear；In current air quality index AQI not less than ventilation Switch critical exponent AQION/OFFWhen, the ventilation of VMC closing ventilatory, now VMC is controlled by step S36 Speed V is zero.
In an alternative embodiment of the invention, according to accessed Outdoor Air Quality index and elastic parameter in step S3 Control the switch of the ventilatory of VMC or be specially the step of adjusting the air exchanging rate of VMC：
Default ventilation accordingly is transferred according to elastic parameter accessed in step S1 to control database, and according to step In S1 accessed Outdoor Air Quality index from this preset ventilation control database it is middle obtain corresponding air exchanging rate, and control VMC processed performs ventilation treatment progress according to the air exchanging rate.
It is the database corresponding from different elastic parameters set in advance that above-mentioned default ventilation, which is controlled database, In the database, Outdoor Air Quality index and air exchanging rate are one-to-one relations.VMC as shown in Figure 4 changes Gas operation curve, as elastic parameter P=100%, it presets ventilation and controlled database as shown in curve S1, in curve accordingly On S1, the corresponding air exchanging rate V of an Outdoor Air Quality Index A QI；Similarly, as elastic parameter P=75%, its is corresponding Default ventilation control database as shown in curve S2；As elastic parameter P=50%, its corresponding default ventilation control data Storehouse is as shown in curve S3；As elastic parameter P=25%, it presets ventilation and controlled database as shown in curve S4 accordingly.
Based on above-mentioned VMC air-changing control device, the embodiment of the present invention additionally provides a kind of VMC ventilation control Device, as shown in figure 5, for convenience of description, Fig. 5 illustrate only the part related to the embodiment of the present invention, and details are as follows：
VMC air-changing control device include outdoor air detection module 100, air quality index acquisition module 200, Outdoor air judge module 300, room air detection module 400, elastic parameter acquisition module 500, room air judge module 600 and ventilation control module 700, and perform following process：
Process 1：Outdoor air detection module 100 detects dust concentration and peculiar smell concentration in outdoor air, air quality Dust concentration and the peculiar smell concentration of the index acquisition module 200 according to detected by outdoor air detection module 100 obtain room Outer air quality index, and Outdoor Air Quality is judged according to the Outdoor Air Quality index by outdoor air judge module 300 It is whether good；Meanwhile room air detection module 400 detects the gas concentration lwevel in room air, elastic parameter obtains mould Gas concentration lwevel of the block 500 according to detected by room air detection module 400 obtains elasticity with default gas concentration lwevel Parameter, and judge whether room air meets ventilation execution condition according to the elastic parameter by room air judge module 600.
Process 2：When Outdoor Air Quality is good and/or room air meets ventilation execution condition, control module of taking a breath 700 control VMCs perform ventilation treatment progress, and return to executive process 1；
Process 3：When Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to acquired The Outdoor Air Quality index and elastic parameter arrived, ventilation control module 700 carry out switch control to the ventilatory of VMC The air exchanging rate of system or adjustment VMC, and return to executive process 1.
Process 1, process 2 and process 3 are described in detail individually below：
For process 1, ash of the air quality index acquisition module 200 according to detected by outdoor air detection module 100 The process that dust concentration and the peculiar smell concentration obtain Outdoor Air Quality index is specially：Air quality index acquisition module 200 According to conventional air quality index monitoring method, dust concentration according to detected by outdoor air detection module 100 and different Taste concentration obtains corresponding Outdoor Air Quality index.Conventional air quality index monitoring method is：First calculate dust concentration With the respective corresponding air quality separate index number of peculiar smell concentration, the air quality separate index number of maximum is then chosen as air quality Index.
Outdoor air judge module 300 judges the whether good mistake of Outdoor Air Quality according to the Outdoor Air Quality index Journey is specially：
Outdoor air judge module 300 judges whether Outdoor Air Quality index is less than preset air performance figure, is, then Judge that Outdoor Air Quality is good, it is no, then judge that Outdoor Air Quality is non-good.
Wherein, preset air performance figure is set in advance to be used to evaluate the whether good reference of Outdoor Air Quality and refer to Numerical value.Such as：Preset air performance figure is 75, if Outdoor Air Quality index is less than 75, judges Outdoor Air Quality Well, whereas if Outdoor Air Quality index is not less than 75, then judge that Outdoor Air Quality is non-good.
Gas concentration lwevel of the elastic parameter acquisition module 500 according to detected by room air detection module 400 with it is pre- If the process that gas concentration lwevel obtains elastic parameter is specially：
Elastic parameter acquisition module 500 obtains elastic parameter according to following formula：
Wherein, P is elastic parameter, NSETTo preset gas concentration lwevel, NROOMFor the dense carbon dioxide in room air Degree, 380ppm is the gas concentration lwevel of the outdoor air chosen in advance in normal conditions, and ppm is concentration unit；Default two Aoxidize concentration of carbon NSETIt is user's gas concentration lwevel set in advance.
Room air judge module 600 judges whether room air meets the mistake of ventilation execution condition according to the elastic parameter Journey is specially：
Room air judge module 600 judges whether elastic parameter is less than default elastic parameter, is then to judge room air Ventilation execution condition is not met, it is no, then judge that room air meets ventilation execution condition.
Wherein, default elastic parameter is the bullet set in advance for being used to judge whether room air meets ventilation execution condition Property parameter reference values.Such as：Default elastic parameter is 15%, if elastic parameter is less than 15%, shows that room air is good And can be temporarily without ventilation, it is determined that room air does not meet ventilation execution condition, whereas if elastic parameter is not less than 15%, then show that the carbon dioxide content in room air is higher and more muddiness is, it is necessary to carry out ventilation processing, it is determined that room Interior air meets ventilation execution condition.
For process 2, when Outdoor Air Quality is good and/or room air meets ventilation execution condition, ventilation control Module 700 controls VMC to perform ventilation treatment progress：
When Outdoor Air Quality is good, ventilation control module 700 controls VMC to open ventilatory, and according to pre- If wind-speed gear perform ventilation treatment progress；
When room air meets ventilation execution condition, ventilation control module 700 controls VMC to open ventilatory, And corresponding wind-speed gear is chosen according to elastic parameter and performs ventilation treatment progress；
When Outdoor Air Quality is good and room air meets ventilation execution condition, ventilation control module 700 controls newly Wind system opens ventilatory, and performs ventilation treatment progress according to default wind-speed gear or choose phase according to elastic parameter The wind-speed gear answered performs ventilation treatment progress.
Wherein, wind-speed gear can be divided into high wind gear, apoplexy gear and low wind gear, each wind-speed gear and correspond to a kind of wind Speed, wind speed corresponding to high wind gear are more than wind speed corresponding to apoplexy gear, and wind speed corresponding to apoplexy gear is more than low wind gear pair The wind speed answered.Above-mentioned default wind-speed gear refers to the wind-speed gear set by user.
Corresponding wind-speed gear execution ventilation treatment progress is chosen according to elastic parameter for above-mentioned, for example, when elasticity ginseng When number is less than 15%, ventilation control module 700 controls VMC to choose apoplexy gear to perform ventilation treatment progress, and works as bullet Property parameter when being less than 8%, show that the gas concentration lwevel of room air is higher, so ventilation control module 700 controls fresh air system System chooses high wind gear to perform ventilation treatment progress, to improve room air as early as possible.
For process 3, wherein according to accessed Outdoor Air Quality index and elastic parameter, control module of taking a breath The process for the air exchanging rate that the ventilatory of 700 pairs of VMCs switch control or adjust VMC can be by following two Kind mode is realized：
(1) according to accessed Outdoor Air Quality index and elastic parameter, ventilation control module 700 is to VMC The process of air exchanging rate that switch control or adjust VMC of ventilatory be specially that (including following four enters Journey)：
Subprocess 31：In calculating cycle, outdoor air detection module 100 is every a preset time period to outdoor air In dust concentration and peculiar smell concentration detected, and Outdoor Air Quality is obtained by air quality index acquisition module 200 and referred to Number, and the gas concentration lwevel in room air is detected by room air detection module 400 simultaneously；
Subprocess 32：At the end of calculating cycle, ventilation control module 700 is from acquired outdoor in the calculating cycle Maximum air quality index and minimum air quality index are chosen in air quality index, and by elastic parameter acquisition module 500 According to the gas concentration lwevel of the room air detected at this moment of room air detection module 400 and default dense carbon dioxide Degree obtains current elastic parameter；
Subprocess 33：Control module 700 of taking a breath is according to maximum air quality index, minimum air quality index and current Elastic parameter obtains ventilation switch critical exponent；
Subprocess 34：Outdoor air judge module 300 judges whether current air quality index is less than ventilation switch and faces Boundary's index, it is that control module 700 of then taking a breath controls VMC to open ventilatory, no, then control module 700 of taking a breath controls VMC closes ventilatory.
Wherein, calculating cycle is specifically as follows 10 minutes, and preset time period is specifically as follows 10 seconds；In above process, It is then in 10 minutes, outdoor air detection module 100 entered every 10 seconds to the dust concentration in outdoor air and peculiar smell concentration Row detection, and Outdoor Air Quality index is obtained by air quality index acquisition module 200, and mould is detected by room air simultaneously Block 400 detects the gas concentration lwevel in room air.And at the end of the calculating cycle of 10 minutes, control module 700 of taking a breath Maximum air quality index AQI is chosen from acquired Outdoor Air Quality index in 10 minutesMAXWith minimum air quality Index A QIMIN, and by elastic parameter acquisition module 500 according to the interior detected at this moment of room air detection module 400 The gas concentration lwevel of air obtains current elastic parameter P with default gas concentration lwevel.
It is above-mentioned by elastic parameter acquisition module 500 according to the interior detected at this moment of room air detection module 400 The process that the gas concentration lwevel of air and default gas concentration lwevel obtain current elastic parameter is specially：
Elastic parameter acquisition module 500 obtains current elastic parameter according to following formula：
Wherein, P is elastic parameter, NSETTo preset gas concentration lwevel, NROOMFor the dense carbon dioxide in room air Degree, 380ppm is the gas concentration lwevel of the outdoor air chosen in advance in normal conditions, and ppm is concentration unit；Default two Aoxidize concentration of carbon NSETIt is user's gas concentration lwevel set in advance.
Above-mentioned ventilation control module 700 is according to maximum air quality index, minimum air quality index and current elasticity Parameter acquiring ventilation switch critical exponent process be specially：
Control module 700 of taking a breath obtains ventilation switch critical exponent according to following formula：
AQION/OFF=AQIMIN+(AQIMAX-AQIMIN)×P
Wherein, AQION/OFFCritical exponent, AQI are switched for ventilationMINFor minimum air quality index, AQIMAXFor maximum sky Makings volume index, P are current elasticity indexes.
Above-mentioned " current air quality index " refers at the end of calculating cycle, by air quality in subprocess 31 Outdoor Air Quality index acquired in index acquisition module 200.
In the implementation procedure of above-mentioned subprocess 34, the ventilation operation curve of VMC is as shown in figure 3, in current sky Makings volume index AQI is less than ventilation switch critical exponent AQION/OFFWhen, control VMC to open ventilation work(by step S35 Can, now VMC can perform ventilation according to a certain wind-speed gear (such as high wind gear, apoplexy gear or low wind gear) Treatment progress, air exchanging rate is to should wind-speed gear；In current air quality index AQI not less than ventilation switch critical exponent AQION/OFFWhen, control VMC to close ventilatory by step S36, now the air exchanging rate of VMC is zero.
(2) according to accessed Outdoor Air Quality index and elastic parameter, ventilation control module 700 is to VMC Ventilatory switch control or adjust the process of air exchanging rate of VMC and be specially：
Ventilation control module 700 transfers corresponding default ventilation control number according to elastic parameter accessed in process 1 According to storehouse, and ventilation is preset from this according to Outdoor Air Quality index accessed in process 1 and controls database middle acquisition accordingly Air exchanging rate, and control VMC according to the air exchanging rate perform ventilation treatment progress.
It is the database corresponding from different elastic parameters set in advance that above-mentioned default ventilation, which is controlled database, In the database, Outdoor Air Quality index and air exchanging rate are one-to-one relations.VMC as shown in Figure 4 changes Gas operation curve, as elastic parameter P=100%, it presets ventilation and controlled database as shown in curve S1, in curve accordingly On S1, the corresponding air exchanging rate V of an Outdoor Air Quality Index A QI；Similarly, as elastic parameter P=75%, its is corresponding Default ventilation control database as shown in curve S2；As elastic parameter P=50%, its corresponding default ventilation control data Storehouse is as shown in curve S3；As elastic parameter P=25%, it presets ventilation and controlled database as shown in curve S4 accordingly.
In actual application, outdoor air detection module 100 can be specifically to include dust sensor and peculiar smell biography The outdoor air detection circuit of sensor, room air detection module 400 can be specifically the interior for including carbon dioxide sensor Air detection circuit, for air quality index acquisition module 200, outdoor air judge module 300, elastic parameter acquisition module 500th, room air judge module 600 and ventilation control module 700, because this five modules are related to acquisition, the judgement of data And to VMC ventilation control (including ventilatory be turned on and off and the adjustment of air exchanging rate), it is possible to Be integrated in a master controller, as shown in figure 5, the master controller can be single-chip microcomputer, arm processor or other possess number According to the programming device of logic processing capability.
In summary, in embodiments of the present invention, by detecting dust concentration and the acquisition of peculiar smell concentration in outdoor air Outdoor Air Quality index, and judge whether Outdoor Air Quality is good；Meanwhile according to detected indoor carbon dioxide Concentration obtains elastic parameter with default gas concentration lwevel, and judges whether room air meets ventilation and hold according to the elastic parameter Row condition；When Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to accessed outdoor Air quality index and elastic parameter carry out switching control or control the ventilation of VMC to the ventilatory of VMC Speed, it is good and the ventilatory of VMC is carried out in the case that Outdoor Air Quality is poor so as to air indoors Regulation and control, so that ventilatory is unlikely to whole unlatching when VMC is run, help to extend dust removal component and the portion that eliminates the unusual smell The service life of part or replacement cycle, and and then reduction VMC cost of upkeep.
In view of application advantage of the above-mentioned VMC air-changing control device in VMC, the embodiment of the present invention also provide A kind of VMC for including above-mentioned VMC air-changing control device.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (15)

  1. The control method 1. a kind of VMC is taken a breath, it is characterised in that the VMC ventilation control method includes following step Suddenly：
    A. the dust concentration and peculiar smell concentration in outdoor air are detected, room is obtained according to the dust concentration and the peculiar smell concentration Outer air quality index, and judge whether Outdoor Air Quality is good according to the Outdoor Air Quality index；Meanwhile sensing chamber Gas concentration lwevel in interior air, elastic parameter is obtained according to the gas concentration lwevel and default gas concentration lwevel, and Judge whether room air meets ventilation execution condition according to the elastic parameter；
    B. when Outdoor Air Quality is good and/or room air meets ventilation execution condition, control VMC performs ventilation Treatment progress, and return and perform step A；
    C. when Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to accessed outdoor Air quality index and elastic parameter carry out switching control or adjust the ventilation of VMC to the ventilatory of VMC Speed, and return and perform step A；
    The ventilatory of VMC is opened according to accessed Outdoor Air Quality index and elastic parameter in step C Close control or comprise the following steps the step of adjusting the air exchanging rate of VMC：
    C1. in calculating cycle, the dust concentration in outdoor air and peculiar smell concentration are examined every a preset time period Survey, and obtain Outdoor Air Quality index, and detect the gas concentration lwevel in room air simultaneously；
    C2. at the end of calculating cycle, chosen from acquired Outdoor Air Quality index in the calculating cycle maximum Air quality index and minimum air quality index, and according to the gas concentration lwevel of now detected room air with it is pre- If gas concentration lwevel obtains current elastic parameter；
    C3. it is critical ventilation switch to be obtained according to maximum air quality index, minimum air quality index and current elastic parameter Index；
    C4. judge whether current air quality index is less than ventilation switch critical exponent, be that then execution step C5, no, then holds Row step C6；
    C5. VMC is controlled to open ventilatory；
    C6. VMC is controlled to close ventilatory.
  2. The control method 2. VMC as claimed in claim 1 is taken a breath, it is characterised in that according to described outdoor empty in step A Makings volume index judges that the whether good step of Outdoor Air Quality is specially：
    Judge whether Outdoor Air Quality index is less than preset air performance figure, be, then judge that Outdoor Air Quality is good, It is no, then judge that Outdoor Air Quality is non-good.
  3. The control method 3. VMC as claimed in claim 1 is taken a breath, it is characterised in that according to the titanium dioxide in step A Concentration of carbon and default gas concentration lwevel obtain the step of elastic parameter and are specially：
    Elastic parameter is obtained according to following formula：
    <mrow> <mi>P</mi> <mo>=</mo> <mfrac> <mrow> <msub> <mi>N</mi> <mrow> <mi>S</mi> <mi>E</mi> <mi>T</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>N</mi> <mrow> <mi>R</mi> <mi>O</mi> <mi>O</mi> <mi>M</mi> </mrow> </msub> </mrow> <mrow> <msub> <mi>N</mi> <mrow> <mi>S</mi> <mi>E</mi> <mi>T</mi> </mrow> </msub> <mo>-</mo> <mn>380</mn> <mi>p</mi> <mi>p</mi> <mi>m</mi> </mrow> </mfrac> <mo>&amp;times;</mo> <mn>100</mn> <mi>%</mi> </mrow>
    Wherein, P is elastic parameter, NSETTo preset gas concentration lwevel, NROOMFor the gas concentration lwevel in room air.
  4. The control method 4. VMC as claimed in claim 1 is taken a breath, it is characterised in that joined in step A according to the elasticity Number judges that the step of whether room air meets ventilation execution condition is specially：
    Judge whether the elastic parameter is less than default elastic parameter, be, then judge that room air does not meet ventilation execution condition, It is no, then judge that room air meets ventilation execution condition.
  5. The control method 5. VMC as claimed in claim 1 is taken a breath, it is characterised in that work as Outdoor Air Quality in step B When good and/or room air meets ventilation execution condition, control VMC performs the step of taking a breath treatment progress and is specially：
    When Outdoor Air Quality is good, control VMC opens ventilatory, and is performed and changed according to default wind-speed gear Gas disposal process；
    When room air meets ventilation execution condition, control VMC opens ventilatory, and is chosen according to elastic parameter Corresponding wind-speed gear performs ventilation treatment progress；
    When Outdoor Air Quality is good and room air meets ventilation execution condition, control VMC opens ventilatory, And perform ventilation treatment progress according to default wind-speed gear or corresponding wind-speed gear is chosen according to the elastic parameter and hold Row ventilation treatment progress.
  6. The control method 6. VMC as claimed in claim 1 is taken a breath, it is characterised in that step C3 is specially：
    Ventilation switch critical exponent is obtained according to following formula：
    AQION/OFF=AQIMIN+(AQIMAX-AQIMIN)×P
    Wherein, AQION/OFFCritical exponent, AQI are switched for ventilationMINFor minimum air quality index, AQIMAXFor maximum air matter Volume index, P are current elasticity indexes.
  7. The control method 7. VMC as claimed in claim 1 is taken a breath, it is characterised in that according to accessed in step C Outdoor Air Quality index and elastic parameter carry out switching control or adjust VMC to the ventilatory of VMC The step of air exchanging rate is specially：
    According to the elastic parameter default ventilation accordingly is transferred to control database, and according to the Outdoor Air Quality index from The default middle corresponding air exchanging rate of acquisition of controlling database of taking a breath, and control VMC to be performed according to the air exchanging rate Ventilation treatment progress.
  8. 8. a kind of VMC air-changing control device, it is characterised in that the VMC air-changing control device includes outdoor empty Gas detection module, air quality index acquisition module, outdoor air judge module, room air detection module, elastic parameter obtain Modulus block, room air judge module and ventilation control module, and perform following process：
    Process 1：Dust concentration and peculiar smell concentration in the outdoor air detection module detection outdoor air, the air quality Index acquisition module obtains Outdoor Air Quality index according to the dust concentration and the peculiar smell concentration, and by described outdoor empty Gas judge module judges whether Outdoor Air Quality is good according to the Outdoor Air Quality index；Meanwhile the room air Gas concentration lwevel in detection module detection room air, the elastic parameter acquisition module is according to the gas concentration lwevel Elastic parameter is obtained with default gas concentration lwevel, and room is judged according to the elastic parameter by the room air judge module Whether interior air meets ventilation execution condition；
    Process 2：When Outdoor Air Quality is good and/or room air meets ventilation execution condition, the ventilation control module Control VMC to perform ventilation treatment progress, and return and perform the process 1；
    Process 3：When Outdoor Air Quality is non-good, and room air does not meet ventilation execution condition, according to accessed Outdoor Air Quality index and elastic parameter, it is described ventilation control module to the ventilatory of VMC carry out switch control or Person adjusts the air exchanging rate of VMC, and returns and perform the process 1；
    According to accessed Outdoor Air Quality index and elastic parameter, ventilation of the ventilation control module to VMC Function switch control or adjusts the process of air exchanging rate of VMC：
    In calculating cycle, the outdoor air detection module is every a preset time period to the dust concentration in outdoor air Detected with peculiar smell concentration, and by the air quality index acquisition module obtain Outdoor Air Quality index, and simultaneously by Gas concentration lwevel in the room air detection module detection room air；
    At the end of calculating cycle, the ventilation control module refers to from acquired Outdoor Air Quality in the calculating cycle Maximum air quality index and minimum air quality index are chosen in number, and by the elastic parameter acquisition module according to above-mentioned room The gas concentration lwevel of interior air detection module room air detected at this moment obtains with default gas concentration lwevel works as Preceding elastic parameter；
    The ventilation control module is according to the maximum air quality index, the minimum air quality index and current elasticity Parameter acquiring ventilation switch critical exponent；
    The outdoor air judge module judges whether current air quality index is less than the ventilation and switchs critical exponent, It is that then the ventilation control module control VMC opens ventilatory, no, then the ventilation control module controls fresh air system System closes ventilatory.
  9. 9. VMC air-changing control device as claimed in claim 8, it is characterised in that the outdoor air judge module root Judge that the whether good process of Outdoor Air Quality is specially according to the Outdoor Air Quality index：
    The outdoor air judge module judges whether the Outdoor Air Quality index is less than preset air performance figure, is, Then judge that Outdoor Air Quality is good, it is no, then judge that Outdoor Air Quality is non-good.
  10. 10. VMC air-changing control device as claimed in claim 8, it is characterised in that the elastic parameter acquisition module It is specially according to the gas concentration lwevel and the process of default gas concentration lwevel acquisition elastic parameter：
    The elastic parameter acquisition module obtains elastic parameter according to following formula：
    <mrow> <mi>P</mi> <mo>=</mo> <mfrac> <mrow> <msub> <mi>N</mi> <mrow> <mi>S</mi> <mi>E</mi> <mi>T</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>N</mi> <mrow> <mi>R</mi> <mi>O</mi> <mi>O</mi> <mi>M</mi> </mrow> </msub> </mrow> <mrow> <msub> <mi>N</mi> <mrow> <mi>S</mi> <mi>E</mi> <mi>T</mi> </mrow> </msub> <mo>-</mo> <mn>380</mn> <mi>p</mi> <mi>p</mi> <mi>m</mi> </mrow> </mfrac> <mo>&amp;times;</mo> <mn>100</mn> <mi>%</mi> </mrow>
    Wherein, P is elastic parameter, NSETTo preset gas concentration lwevel, NROOMFor the gas concentration lwevel in room air.
  11. 11. VMC air-changing control device as claimed in claim 8, it is characterised in that the room air judge module Judge that the process whether room air meets ventilation execution condition is specially according to the elastic parameter：
    The room air judge module judges whether the elastic parameter is less than default elastic parameter, is then to judge Interior Space Gas does not meet ventilation execution condition, no, then judges that room air meets ventilation execution condition.
  12. 12. VMC air-changing control device as claimed in claim 8, it is characterised in that when Outdoor Air Quality well and/ Or room air meet ventilation execution condition when, it is described ventilation control module control VMC perform ventilation treatment progress mistake Journey is specially：
    When Outdoor Air Quality is good, the ventilation control module control VMC opens ventilatory, and according to default Wind-speed gear perform ventilation treatment progress；
    When room air meets ventilation execution condition, the ventilation control module control VMC opens ventilatory, and Corresponding wind-speed gear is chosen according to elastic parameter and performs ventilation treatment progress；
    When Outdoor Air Quality is good and room air meets ventilation execution condition, the ventilation control module control fresh air system System opens ventilatory, and performs ventilation treatment progress according to default wind-speed gear or choose phase according to the elastic parameter The wind-speed gear answered performs ventilation treatment progress.
  13. 13. VMC air-changing control device as claimed in claim 8, it is characterised in that it is described ventilation control module according to The maximum air quality index, the minimum air quality index and current elastic parameter obtain ventilation switch critical exponent Process be specially：
    The ventilation control module obtains ventilation switch critical exponent according to following formula：
    AQION/OFF=AQIMIN+(AQIMAX-AQIMIN)×P
    Wherein, AQION/OFFCritical exponent, AQI are switched for ventilationMINFor minimum air quality index, AQIMAXFor maximum air matter Volume index, P are current elasticity indexes.
  14. 14. VMC air-changing control device as claimed in claim 8, it is characterised in that empty according to accessed outdoor Makings volume index and elastic parameter, the ventilation control module carry out switching control or adjustment to the ventilatory of VMC The process of the air exchanging rate of VMC is specially：
    The ventilation control module is transferred default ventilation accordingly according to the elastic parameter and controlled database, and according to the room Outer air quality index from the default ventilation control database it is middle obtain corresponding air exchanging rate, and control VMC according to The air exchanging rate performs ventilation treatment progress.
  15. 15. a kind of VMC, it is characterised in that the VMC includes new as described in any one of claim 8 to 14 Wind system air-changing control device.
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